M. Diantoro, S. Rakhmah, M. Khoirudin, D.W. Windasari, C.I. Yogihati
Indonesian is one of the enormous biodiversity countries in the world. Various types of tropical plants exist in Indonesia, one of which is Pterocarpus Indicus W (PIW). PIW is one of the ornamental plants and has a wide range of compound content including flavonoids. Flavonoids are natural polymer compounds with a chemical formula of C6-C3-C6. There are many kinds of flavonoids which could exist in various plants, one of which is quercetin. Quercetin is a unique bioflavonoid that has antioxidant activity. We have performed an extraction of Flavonoid using the maceration method which subsequently doped with several amounts of silver nanoparticles (Ag-NPs). It is suggested that transforming PIW-AgNPS in the form of the film will increase the crystallinity compare to its pristine form. The growth of this crystallinity will enhance the expected properties of the material. The films were prepared based on the content of Ag NPs, i.e., for 0.01, 0.02, 0.03, 0.04, and 0.05 g. It was found that the microstructure of PIW extract showed that flavonoids belonged to flavonoid with quercetin type. The XRD data analyses showed an increase in the crystallinity of the flavonoid PIW-Ag film indicated by the peak at 2θ = 38.51° of (111) Bragg's plane influenced by increase of Ag NPs. From the SEM image, we found that AgNPs exist in the sample and also further revealed by TEM analysis. The conductivity of the flavonoid PIW-Ag film shows a linear increase along with the addition of Ag doping. © Published under licence by IOP Publishing Ltd.
Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang 5, Malang, 65145, Indonesia; Central Laboratory of Minerals and Advanced Materials, Universitas Negeri Malang, Jl. Semarang 5, Malang, 65145, Indonesia
